Just downloaded QCAD and the .pdf "An Introduction to Computer Aided Design (CAD)". I noticed that all of Part I is completely missing. Part II is missing pages 16-21 and pages 25-26 pages. Part III is missing pages 27-57 and pages 60-70. Part IV is missing pages 71-72, pages 76-155 and pages 158-208. All of Parts V, VI and VII are also missing from this .pdf file. Is this by design? The Table of Contents and the Index show that these pages should be in the .pdf file. I'm new to CAD and am sure that those pages include important information.